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Contract OI history

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Nov 20, 2026 EXPIRATION

CENX $40.00 Call

CENX261120C00040000

Latest saved OI454Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
CENX $40.00 call open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 4542270 2026-10-08: 256 OI2026-10-09: 266 OI2026-10-13: 333 OI2026-10-14: 335 OI2026-10-16: 390 OI2026-10-21: 453 OI2026-10-23: 454 OI Oct 08, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

CENX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing454+1
Oct 21, 2026453+63
Oct 16, 2026390+55
Oct 14, 2026335+2
Oct 13, 2026333+67
Oct 09, 2026266+10
Oct 08, 2026256No prior observation